/**
 * 网络管理器
 * 
 * 功能：
 * 1. 管理网络连接状态
 * 2. 处理网络请求和响应
 * 3. 实现断线重连机制
 * 4. 管理网络数据缓存
 * 
 * 特点：
 * 1. 支持多种协议
 * 2. 请求队列管理
 * 3. 网络状态监控
 * 4. 数据加密和压缩
 */
import { _decorator, Component, instantiate, Vec3 } from 'cc';
const { ccclass, property } = _decorator;
import { NetworkPlayer } from './NetworkPlayer';
import { ResourceManager } from '../resource/ResourceManager';

@ccclass('NetworkManager')
export class NetworkManager extends Component {
    private static _instance: NetworkManager | null = null;
    private connected: boolean = false;
    private requestQueue: any[] = [];
    private players: Map<string, NetworkPlayer> = new Map();
    private eventListeners: Map<string, Function[]> = new Map();

    public static get instance(): NetworkManager {
        return this._instance!;
    }

    onLoad() {
        if (NetworkManager._instance === null) {
            NetworkManager._instance = this;
            this.initNetwork();
        } else {
            this.node.destroy();
        }
    }

    private initNetwork(): void {
        // 实现网络初始化逻辑
    }

    // 网络请求方法
    public async request(url: string, data: any): Promise<any> {
        // 实现网络请求逻辑
        return null;
    }

    // 断线重连
    private reconnect(): void {
        // 实现重连逻辑
    }

    public spawnNetworkPlayer(id: string, position: Vec3): void {
        // 实例化网络玩家
        const playerPrefab = await ResourceManager.instance.loadResource<Prefab>('prefabs/NetworkPlayer');
        const playerNode = instantiate(playerPrefab);
        
        // 设置位置
        playerNode.setPosition(position);
        this.node.addChild(playerNode);

        // 初始化网络组件
        const networkPlayer = playerNode.getComponent(NetworkPlayer);
        if (networkPlayer) {
            networkPlayer.init(id);
            this.players.set(id, networkPlayer);
        }
    }

    public removeNetworkPlayer(id: string): void {
        const player = this.players.get(id);
        if (player) {
            player.node.destroy();
            this.players.delete(id);
        }
    }

    public on(event: string, callback: Function): void {
        if (!this.eventListeners.has(event)) {
            this.eventListeners.set(event, []);
        }
        this.eventListeners.get(event)?.push(callback);
    }

    public off(event: string, callback: Function): void {
        const callbacks = this.eventListeners.get(event);
        if (callbacks) {
            const index = callbacks.indexOf(callback);
            if (index !== -1) {
                callbacks.splice(index, 1);
            }
        }
    }

    public emit(event: string, ...args: any[]): void {
        const callbacks = this.eventListeners.get(event);
        if (callbacks) {
            callbacks.forEach(callback => callback(...args));
        }
    }
} 